RSSS Research Solutions, Inc.
Research Solutions, Inc. (RSSS) Institutional Ownership
What the institutions did with RSSS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| NEEDHAM INVESTMENT MANAGEMENT LLC | 3.2M | 28.8% |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 2.6M | 23.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | 10.5% |
| Luxor Capital Group, LP | 652.0K | 6.0% |
| BARD ASSOCIATES INC | 609.0K | 5.6% |
| PARTHENON LLC | 392.3K | 3.6% |
| Dynamic Advisor Solutions LLC | 365.6K | 3.3% |
| North Star Investment Management Corp. | 357.0K | 3.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 295.1K | 2.7% |
| Navalign, LLC | 196.1K | 1.8% |
| VANGUARD FIDUCIARY TRUST CO | 173.9K | 1.6% |
| LPL Financial LLC | 146.3K | 1.3% |
| BlackRock, Inc. | 143.3K | 1.3% |
| RENAISSANCE TECHNOLOGIES LLC | 106.0K | 1.0% |
| 4Thought Financial Group Inc. | 83.4K | 0.8% |
| DIMENSIONAL FUND ADVISORS LP | 82.4K | 0.8% |
| Integrated Quantitative Investments LLC | 72.5K | 0.7% |
| NORTHERN TRUST CORP | 61.0K | 0.6% |
| STATE STREET CORP | 58.8K | 0.5% |
| Rothschild Wealth LLC | 51.3K | 0.5% |
| GOLDMAN SACHS GROUP INC | 44.0K | 0.4% |
| Greenhaven Road Investment Management, L.P. | 38.5K | 0.4% |
| KING LUTHER CAPITAL MANAGEMENT CORP | 35.0K | 0.3% |
| ACADIAN ASSET MANAGEMENT LLC | 29.0K | 0.3% |
| CITADEL ADVISORS LLC | 28.0K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Topline Capital Management, LLC | Reduced | 461.2K | 11.4K | -449.7K |
| Hillsdale Investment Management Inc. | Sold Out | 86.0K | 0 | -86.0K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 176.9K | 106.0K | -70.9K |
| Navalign, LLC | Reduced | 251.1K | 196.1K | -55.0K |
| Dynamic Advisor Solutions LLC | Increased | 317.7K | 365.6K | +47.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 335.2K | 295.1K | -40.1K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 65.8K | 29.0K | -36.9K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 34.9K | 0 | -34.9K |
| NewEdge Advisors, LLC | New | 0 | 25.9K | +25.9K |
| North Star Investment Management Corp. | Increased | 333.5K | 357.0K | +23.5K |
| BlackRock, Inc. | Increased | 120.2K | 143.3K | +23.1K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 151.4K | 173.9K | +22.5K |
| BOOTHBAY FUND MANAGEMENT, LLC | Sold Out | 16.3K | 0 | -16.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.1M | 1.1M | +13.5K |
| XTX Topco Ltd | Sold Out | 12.7K | 0 | -12.7K |
| STIFEL FINANCIAL CORP | Sold Out | 11.0K | 0 | -11.0K |
| CITADEL ADVISORS LLC | Reduced | 35.7K | 28.0K | -7.7K |
| Financial Management Professionals, Inc. | Sold Out | 5.4K | 0 | -5.4K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 78.0K | 82.4K | +4.5K |
| NORTHERN TRUST CORP | Increased | 56.6K | 61.0K | +4.4K |
| Tower Research Capital LLC (TRC) | Increased | 1.3K | 4.7K | +3.5K |
| UBS Group AG | Increased | 3.7K | 6.6K | +2.9K |
| GOLDMAN SACHS GROUP INC | Reduced | 46.6K | 44.0K | -2.6K |
| BARD ASSOCIATES INC | Increased | 608.4K | 609.0K | +577 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | New | 0 | 500 | +500 |
| BARCLAYS PLC | New | 0 | 231 | +231 |
| Caitong International Asset Management Co., Ltd | Increased | 3 | 5 | +2 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.